Another reason why, your PC is running rather slowly than it usually does might be because you currently have too many documents, pictures, music, videos, etc on your system.
To find out if that is the reason why, create a "System Repair Disk" by inserting a rewritable CD (CD-RW) and back up all of the documents, pictures, music, videos, as well as files on your desktop PC.
Then, after you've finished creating your "System Repair Disk", take the CD outside of your PC's "CD/DVD" bay.
Next, "defragment" your desktop PC, by using the Windows 10 "Disk Fragmenter", let your PC "defrag" entirely.
After that, type in the search box in the lower left-hand corner of your screen, "This PC."
Click on "This PC", then wait for the window to open up on your screen.
Right-click on "Local Disk C", wait for your cursor to stop showing the "spinning circle."
After you've done all of those things, you should see a "pie graph" that is both pink and blue-colored in another medium-sized window.
The "pink" coloring should represent how much "used disk space" is currently available on your desktop PC.
The "blue" coloring should represent how much "free disk space" is currently available on your desktop PC.
Also, if the "blue" coloring shows that 30 bytes or else are currently available on your desktop PC, I suggest you delete some of the documents, photos, videos, playlists, etc. that you saved onto your desktop PC.
Important: If you ever turn off you desktop PC using the "power" button, located on the top of your CPU make sure that you ONLY "press" it if your desktop PC is malfunctioning.
Important: Also, if after you've turned on your desktop PC and your monitor, you encounter an error message, which reads: "
Your PC did not restart correctly. We will fix this problem for you.", let your desktop PC do whatever it needs to do and wait until it is 100% finished fixing itself.
Important: If you ever decide to "Reset This PC", make sure that you only select the "Just keep my files" option, because if you select the "Remove everything" option, all of your drives will be erased and you will only be able to restore your desktop PC to its original shape (meaning after you upgraded it to Windows 10) by using the "Windows 10" "System Repair Disk."
**** I learned that the hard way earlier this week.**** ^^^^ (referencing "Reset This PC")
Finally, the "Go back to the previous build" option in the "Advanced Options" menu, following a failed restart will only work on Windows 10-installed/upgraded desktop PCs/notebooks, if you downloaded any of the beta versions of Windows 10 on your desktop PC / notebook before you upgraded to the "Windows 10 Home" free upgrade or the "Windows 10 Pro" free upgrade from a reliable website.
In conclusion, "reliable websites", only includes the official Microsoft website and its subpages, as well as CNET.com's "Download Center."
**** I hope all of these suggestions, ideas and facts make your desktop PC work as fast as did before you upgraded your desktop PC to "Windows 10 Pro"!!!! ****
~~~~ Have a great day/night! ~~~~
~~~~ pinellas2015 ~~~~